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Recoatable UV radiation cured coating for plastic as well as production method and application method of coating

A technology of radiation curing and production method, applied in polyurea/polyurethane coatings, coatings, devices for coating liquids on surfaces, etc. effect of voc

Active Publication Date: 2014-05-14
ZHONGSHAN YONGHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has brought a lot of trouble to the production and wasted a lot of manpower and material resources. Therefore, it is still quite difficult to directly repaint the current UV radiation photocuring coating.

Method used

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  • Recoatable UV radiation cured coating for plastic as well as production method and application method of coating
  • Recoatable UV radiation cured coating for plastic as well as production method and application method of coating
  • Recoatable UV radiation cured coating for plastic as well as production method and application method of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The production method of UV radiation curing coating for recoatable plastics comprises the following steps:

[0033] (1) Weigh the raw materials according to the content of each component in Table 1; wherein the mixed solvent is composed of butanone: n-butanol: ethyl acetate=60:15:25 by weight.

[0034] (2) Mixing and dispersing resin monomers: Take a clean paint-making tank, mix tetrafunctional aliphatic urethane acrylate resin, difunctional urethane acrylate resin, trimethylolpropane trimethacrylate, 1,6-hexanediol Add the diacrylate to the paint-making tank, and stir with a high-speed disperser at a speed of 1200-1500 rpm for 8-15 minutes;

[0035] (3) Dissolution of photoinitiator: Mix 1-hydroxy-cyclohexyl-phenyl ketone, 2,4,6(trimethylbenzoyl)diphenylphosphine oxide with mixed solvent, use a high-speed disperser to dissolve The rotating speed of 500-600rpm is stirred until it is completely dissolved, and after filtering with a 500-mesh filter screen, it is standby...

Embodiment 2

[0045] The content of each component is shown in Table 1, and the production method and usage method are shown in Example 1.

Embodiment 3

[0047] The content of each component is shown in Table 1, and the production method and usage method are shown in Example 1.

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PUM

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Abstract

The invention relates to a recoatable UV radiation cured coating for plastic as well as a production method and an application method of the coating. The recoatable UV radiation cured coating for the plastic comprises the following components in percentage by weight: 20-30% of tetrafunctional aliphatic polyurethane acrylate resin, 20-30% of bifunctional polyurethane acrylate resin, 8-15% of trimethylolpropane trimethacrylate, 15-25% of 1,6-hexanediol diacrylate, 2-5% of 1-hydroxy-cyclohexyl-phenyl ketone, 0.5-2% of diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, 7-17% of a solvent, and 0.5-1% of reactive polysiloxane acrylate, wherein the solvent is a mixed solvent composed of at least two of ethyl acetate, butanone, butyl acetate, n-butyl alcohol and isopropanol. The UV radiation cured coating for the recoatable plastic disclosed by the invention can be directly repaired without integrally grinding and prespraying a layer of bottom water while being used normally.

Description

technical field [0001] The invention relates to the technical field of UV coatings, in particular to a UV radiation curing coating for recoatable plastics and a method for producing and using the same. Background technique [0002] UV radiation curing coatings have been fully promoted and used, and the scope of use is getting wider and wider. Its advantages are high fullness, high hardness, high chemical resistance, high wear resistance, low odor, low VOC energy saving The efficiency is significantly improved, but the disadvantage is that the defective products generated in the production cannot be repaired. At present, UV radiation curing coatings have been widely used in the rapid coating of large workpieces such as vehicles, home appliances, and casings. However, due to the large workpieces, some small dust spots are difficult to avoid, and defective products caused by production cannot be repaired. Began to object to UV non-repairable. [0003] At present, it has been ...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12B05D1/02B05D3/10B05D3/06
Inventor 朱振亚尹华雄
Owner ZHONGSHAN YONGHUI CHEM
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